QuickCalc Tools

Fuel Cost Calculator (gas cost for a trip)

Tue, 06 Oct 2026 00:00:00 +0900

Estimate the fuel cost of a trip from distance, MPG and gas price. Round trip, split per person, US, UK or metric units.

Grade Calculator (average test scores and letter grade)

Mon, 05 Oct 2026 00:00:00 +0900

Average test scores in percent or points, with optional weights, and get your letter grade and GPA points.

Fahrenheit to Celsius Converter (°F to °C and back)

Fri, 02 Oct 2026 00:00:00 +0900

Convert Fahrenheit to Celsius and back, including temperature changes, Kelvin and a mental shortcut. 98.6 °F = 37 °C.

Inches to cm Converter (and cm to inches)

Thu, 01 Oct 2026 00:00:00 +0900

Convert inches to cm and back, with fractions (5 3/8 in) and feet + inches for height. 1 inch = 2.54 cm exactly.

Square Feet to Square Meters Converter (ft² to m²)

Wed, 30 Sep 2026 00:00:00 +0900

Convert square feet to square meters and back, by total area or room length × width. 1,000 sq ft = 92.9 m².

Daily Water Intake Calculator (how much water to drink)

Tue, 29 Sep 2026 00:00:00 +0900

How much water should you drink a day? Estimate by weight, exercise and heat, in ounces, liters, cups and bottles.

Steps to Calories and Miles Calculator

Mon, 28 Sep 2026 00:00:00 +0900

Convert steps to miles, km and calories burned from your height, weight and walking pace. US or metric, estimate only.

Baby Formula Amount Calculator (how much formula by weight)

Fri, 25 Sep 2026 00:00:00 +0900

How much formula does your baby need? Enter weight and age to see oz and mL per day and per feed. Estimate only.

Oven Temperature Converter (°F, °C, gas mark)

Thu, 24 Sep 2026 00:00:00 +0900

Convert oven temperatures between °F, °C, fan/convection and gas mark, with a full chart. 350 °F ≈ 180 °C = gas mark 4.

Cups to Grams Converter (common ingredients)

Wed, 23 Sep 2026 00:00:00 +0900

Convert cups to grams for flour, sugar, butter and 30 more ingredients — or grams back to cups. US cups, fractions ok.

Recipe Scaler (servings converter)

Tue, 22 Sep 2026 00:00:00 +0900

Scale any recipe up or down: enter the servings you want and the ingredient amounts are converted, fractions and all.

Sleep Calculator (bedtime and wake-up time)

Fri, 18 Sep 2026 00:00:00 +0900

Find the best bedtime or wake-up time using 90-minute sleep cycles, including the time it takes you to fall asleep.

Freelance Day Rate Calculator (what to charge per day)

Thu, 17 Sep 2026 00:00:00 +0900

Find the freelance day rate you need — from your target income, business costs, time off and non-billable days.

Pay Raise Calculator (percent increase and real value)

Wed, 16 Sep 2026 00:00:00 +0900

See what a pay raise is really worth: new hourly and annual pay, the gain per month, and what is left after inflation.

Salary to Hourly Converter (real hourly rate)

Tue, 15 Sep 2026 00:00:00 +0900

Turn an annual salary into an hourly rate, and see your true hourly pay once paid time off and unpaid lunch count.

Overtime Pay Calculator (time and a half)

Mon, 14 Sep 2026 00:00:00 +0900

Work out time-and-a-half or double-time pay from your hourly rate and hours worked, with regular and overtime split out.

Discount Calculator (percent off price)

Fri, 11 Sep 2026 00:00:00 +0900

Work out the sale price after a percent discount, or find what percent off you got. Preset buttons for 10–70% off.

Sales Tax Calculator (add or remove tax)

Thu, 10 Sep 2026 00:00:00 +0900

Add sales tax to a price, or find the pre-tax price from a total. Enter any rate, with common US rate presets.

Savings Goal Calculator (how much to save per month)

Wed, 09 Sep 2026 00:00:00 +0900

Work out how much to save each month to reach your goal. Enter the target, what you have saved and your deadline.

Loan Payment Calculator (monthly payment)

Mon, 07 Sep 2026 00:00:00 +0900

Calculate your monthly loan payment, total interest and total cost. Enter amount, APR and term. Car, home, personal.

2048 — slide and merge the tiles

Sat, 05 Sep 2026 00:00:00 +0900

Play 2048 free in your browser. Swipe or use the arrow keys to slide the tiles; two equal numbers merge into one. Reach the 2048 tile. Score and best score are saved on your device, no sign-up.

Habit Grid — pixel habit tracker, no sign-up

Sat, 05 Sep 2026 00:00:00 +0900

Track up to 5 daily habits on a one-year pixel grid. Tap a day to mark it done and see your current streak, days done this month and completion rate. Free, no account, data stays in your browser.

Invite Maker — shareable event invitation page, no sign-up

Sat, 05 Sep 2026 00:00:00 +0900

Free invite maker: enter the event name, date, place and a message, get a link you can text or email. 5 color themes, Add to Google Calendar button. No sign-up, nothing stored on a server.

Memory Match — flip the cards and find the pairs

Sat, 05 Sep 2026 00:00:00 +0900

Free memory card game. Flip two cards at a time and match all the pairs in as few moves as possible. 4×4 easy mode or 6×6 hard mode, with a move counter and timer. Plays on phone and desktop, no sign-up.

Reaction Time Test — how fast are your reflexes?

Sat, 05 Sep 2026 00:00:00 +0900

Free reaction time test. Wait for red to turn green, then tap as fast as you can. See each try in milliseconds, your average of 5 and your personal best. Works on phone and desktop, no sign-up.

Appliance Electricity Cost Calculator