Free
$0no card needed
- The Daily, every day
- 36 practice questions a day, each with an explanation: 12 easy, 12 medium, 12 hard
- Full-length Test A and Challenge Test 1
- All 1,023 vocabulary words: browse, flashcards and quiz
Digital SAT practice
Reach your peak.
A quick run every day, an explanation for every question, and full-length tests on official timing.
Free, no card. You also get 36 practice questions a day: 12 easy, 12 medium and 12 hard.
The DailySTEP 1
- Three hearts. A miss costs one.
- Streaks pay. ×2 from three in a row, ×3 from six.
- Your longest streak. Beat it tomorrow.
Full-length tests
The real test, rehearsed.
98 questions across four modules, in the digital SAT’s order and on its timing, with a highlighter, a question map and a timer you can see.
How it works
One run a day. One skill at a time.
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1
Play the Daily.
A quick run with three hearts. String right answers together and the questions get harder and the points multiply.
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2
Miss one, learn why.
Every question is tagged by domain and skill, and every answer comes with an explanation.
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3
Drill that skill.
Practice any single skill at any difficulty, or just the questions you got wrong.
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4
Beat your best.
Come back tomorrow and climb. Progress shows your accuracy and your strongest skills.
Built around the real SAT blueprint.
Every question is tagged by section, domain, skill and difficulty, so you can practice exactly what you need. Full tests run like test day: two Reading & Writing modules, a break, then two Math modules.
Free daily practice
12 easy, 12 medium and 12 hard questions free every day, each with a full explanation. Filter by section, domain, skill and difficulty. Resets at midnight.
Real SAT timing
Take any test on official timing, extended 1.5× time, or untimed to focus purely on accuracy.
Adaptive full-length tests
Four modules in official order. The second module of each section adapts to how you did on the first.
Vocabulary
1,023 essential SAT words. Browse the list, flip flashcards, or quiz yourself.
Your progress
Accuracy across daily practice and full tests, your strongest skills, and the ones that need the most help.
Games
PEAK Survivor, Hole and Peak Defense: three games powered by SAT practice questions.
Explanations
Every answer, explained.
Not just the right letter: how to get there, and why the tempting answer is wrong.
MathProblem-Solving and Data AnalysisHard
A store raises the price of a jacket by 20%. Later, it lowers the new price by 20%. The final price is what percent of the original price?
A80%
B96%Correct
C100%The trap
D104%
Check with $100: $100→then$120→then$96
Turn each change into a multiplier.
Up 20% means × 1.20. Down 20% means × 0.80.
Apply them in order.
1.20 × 0.80 = 0.96
Read the answer.
The final price is 96% of the original. That’s B.
Why not 100%?
The 20% cut is taken from the higher price, so it removes more than the 20% increase added.
Test day
What test day looks like.
Every Peakscor full test follows this order. In the standard tests, the second module of each section adapts to how you did on the first.
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Reading & Writing · Module 1
27 questions32 min
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Reading & Writing · Module 2
27 questions32 min
Adapts to how you did on Module 1. -
Break
10 min
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Math · Module 1
22 questions35 min
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Math · Module 2
22 questions35 min
Adapts to how you did on Module 1.
98 questions · 2 hr 14 min of testing, plus the break
Peakscor by the numbers
- 36free practice questions every day
- 98questions in every full-length test
- 1,023SAT vocabulary words
- 1.5×extended-time option on every test
Plans
Free every day. Pro when you’re serious.
The free plan is the real thing, not a trial. Pro removes the limits. Peak adds the full course and a plan to test day.
Pro
$20a month, or $200 a year
- Everything in Free
- Unlimited practice, no daily limit
- Every full-length test and Challenge test
Peak
$29a month, or $280 a year
- Everything in Pro
- The full Learn course: every lesson and mastery quiz
- Peak Plan, day by day to test day
Prices in US dollars. Cancel anytime.
FAQ
Questions, answered.
The Daily, plus 36 practice questions every day: 12 easy, 12 medium and 12 hard, each with a full explanation. Full-length Test A, Challenge Test 1 and all 1,023 vocabulary words are free too. No card needed.
Pro is $20 a month or $200 a year: unlimited practice with no daily limit, plus every full-length test and Challenge test. Peak is $29 a month or $280 a year: everything in Pro, plus the full Learn course and Peak Plan. Cancel anytime from your account.
98 questions across four modules, in the digital SAT’s order: Reading & Writing Module 1 and Module 2 (27 questions each), a 10-minute break, then Math Module 1 and Module 2 (22 questions each). On official timing that’s 2 hr 14 min of testing. You get estimated section scores and a total at the end.
Yes. In the standard full-length tests, Module 2 of each section is the harder version if you get 60% or more of Module 1 right, and the easier version if you don’t. Challenge tests use the hardest material throughout.
Official timing, extended 1.5× time, or untimed, on every test, including the free ones. Extended time allows 48 minutes for each Reading & Writing module and about 52 for each Math module. Untimed removes the clock so you can focus on accuracy.
A quick run with three hearts. Each right answer builds your streak: the questions get harder as it grows, and your points multiply (×2 from three in a row, ×3 from six). A miss costs a heart and drops you back to easy. Best is your longest streak.
Every day at midnight. You get a fresh 12 easy, 12 medium and 12 hard.
No. Peakscor is an independent SAT practice tool, not affiliated with the College Board. Scores shown are estimates.
Your next point starts today.
Free, no card.
Ratios, rates, proportions and units · Lesson 4
Unit conversion, including square and cubic units
To convert units, multiply by a conversion factor: a fraction equal to 1, such as . Put the unit you want to get rid of on the opposite side of the factor from where it sits, so it cancels: on the bottom if it is on top, and on top if it is a per unit, such as the hours in kilometers per hour.
Chain the factors for a multi-step conversion. To write 90 kilometers per hour in meters per second, convert kilometers to meters and hours to seconds: meters per second. Every step multiplies or divides. You never add conversion factors. (Temperature scales such as Celsius and Fahrenheit are the exception: they also add or subtract a fixed amount, and the question gives you the formula.)
Square and cubic units. 1 yard is 3 feet, so a square yard is a square 3 feet on each side: square yard square feet. A cubic yard is a cube 3 feet on each side: cubic feet. Use the length factor once for each dimension: squared for area, cubed for volume.
Sense-check the size. Converting to a smaller unit gives a bigger number (3 yards is 9 feet), and converting to a bigger unit gives a smaller number. If a question needs a less common conversion, such as miles to kilometers, look for the factor in the question.
| Length | Area | Volume |
|---|---|---|
| 1 foot = 12 inches | 1 square foot = 144 square inches | 1 cubic foot = 1,728 cubic inches |
| 1 yard = 3 feet | 1 square yard = 9 square feet | 1 cubic yard = 27 cubic feet |
| 1 meter = 100 centimeters | 1 square meter = 10,000 square centimeters | 1 cubic meter = 1,000,000 cubic centimeters |
Worked example Easy
A garden hose delivers water at a constant rate of 6 gallons per minute.
At this rate, how many gallons of water does the hose deliver in 1.5 hours?
- Answer
How to solve it
- The rate is per minute, so convert the time to minutes: minutes.
- Amount = rate × time: gallons.
Why each choice is right or wrong
- A. Incorrect. This multiplies the per-minute rate by 1.5 without converting hours to minutes, . The units don't match: 6 gallons per minute times 1.5 hours.
- B. Correct. 1.5 hours is 90 minutes, and gallons.
- C. Incorrect. 660 comes from reading 1.5 hours as 1 hour 50 minutes, which is 110 minutes, and . The .5 means half an hour, 30 minutes, so 1.5 hours is 90 minutes.
- D. Incorrect. This converts 1.5 hours to seconds, , and multiplies by 6 to get 32,400. The rate is per minute, not per second.
Worked example Medium
A rectangular patio is 15 feet long and 24 feet wide. (1 yard = 3 feet)
What is the area of the patio, in square yards?
- Answer
How to solve it
- Convert each length to yards: yards and yards.
- Area: square yards.
- Check: the area is square feet, and 1 square yard is 9 square feet, so .
Why each choice is right or wrong
- A. Correct. The patio is 5 yards by 8 yards, so its area is 40 square yards. Equivalently, .
- B. Incorrect. This divides 360 square feet by 3, the length factor, giving 120. A square yard is 3 feet by 3 feet, which is 9 square feet, so divide by 9.
- C. Incorrect. This multiplies 360 square feet by 3, giving 1,080. Square yards are bigger than square feet, so the number of square yards must be smaller than 360, and the factor is 9, not 3.
- D. Incorrect. This multiplies 360 by 9 instead of dividing, giving 3,240. Converting to a bigger unit gives a smaller number.
Trap Using the length factor for square or cubic units
1 foot is 12 inches, but 1 square foot is square inches and 1 cubic foot is cubic inches. Dividing square inches by 12 instead of 144 is a slip that distractors are built from. Converting each length before you multiply avoids it.
Trap Adding factors in a chain
An hour has 60 minutes and each minute has 60 seconds, so an hour has seconds, not . When you convert in steps, multiply the factors. Five hours is seconds.
Trap Multiplying when you should divide
Write each factor as a fraction with units and check that the unit you're leaving cancels. If you're unsure, use size: a bigger unit means a smaller number.
Desmos When Desmos is faster
Type the whole chain of factors on one expression line and Desmos shows the result. For the hose, 6601.5 gives 540. For the patio, 15*24/9 gives 40.
One line keeps every factor visible, so a missing 60 or a 3 that should be a 9 is easy to spot. Desmos doesn't track units, though: decide whether each factor multiplies or divides before you type it.
Practice
Choose a section, then practice a whole domain or drill a single skill.
Full-length tests
Each test mirrors the digital SAT: 98 questions across four modules, 2 hr 14 min on official timing.
A little harder than the real SAT. These tests can run slightly tougher than test day, which makes them good practice: if you can handle these, the real one should feel easier. No question appears in more than one test, Challenge Tests included.
Challenge Tests Hardest of the hardest
Same 98-question format, but every question is drawn from the toughest SAT material: Challenging-tier math throughout and the hardest reading.
Vocab
Study the classic SAT vocabulary list. Browse, flip flashcards, or quiz yourself.
Free every day. Pro when you're serious.
Practice free every day. Pro removes the limits. Peak adds the full course and a plan to test day.
FREE
$0forever
- ✓ 12 easy + 12 medium + 12 hard daily
- ✓ Practice by any SAT domain
- ✓ Explanations on every question
- ✓ Test A and Challenge Test 1
- ✓ The first lesson of every Learn module
PRO
$200/ year
About $16.67 a month, save $40
- ✓ Everything in Free
- ✓ Unlimited daily practice
- ✓ Every full-length and Challenge test
- ✓ Every timing mode
Full course and plan
PEAK
$280/ year
About $23.33 a month, save $68
- ✓ Everything in Pro
- ✓ Every Learn lesson, summary and mastery quiz
- ✓ Peak Plan: a day-by-day plan to test day
- ✓ Cancel anytime
Prices in USD. Switch or cancel your plan at any time.