Kaizu Calculator
Every calculator you need, in one place.
Quick answers for numbers, units, money and everyday life. Free, no sign-up.
Basic & scientific
Everyday sums, percentages, powers, roots, trigonometry and logs, with a history of your results.
Open calculator →Unit converter
Length, weight, temperature, area, volume, speed, data and time.
Open calculator →Money
Discounts, tax, interest, loans and mortgages, savings goals, salary, margins, ROI and currency rates.
Open calculator →Everyday
Age, days between dates, BMI, percentages, ratios and scaling a recipe.
Open calculator →Health & fitness
Daily calories, body fat, running pace and race times, water intake, ovulation and pregnancy due date.
Open calculator →Time
Time zone converter, hours worked and adding up hours, and Unix timestamps.
Open calculator →Math
Fractions, GPA, mean, median and standard deviation, binary and hex, and random numbers.
Open calculator →Design & web
Aspect ratio and resizing, px to rem, and how long a download or upload takes.
Open calculator →Home & car
What your appliances cost in electricity, and the fuel cost of a trip split per person.
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