Can these replace advice from a doctor?

No. They apply the usual published formulas to the numbers you enter and give an estimate for information. They cannot take your health into account; ask a doctor, midwife or dietitian about anything that matters to you.

Why do two calculators give different numbers?

Because there are several formulas for the same thing, such as body fat or daily calories, and each gives a slightly different estimate. Each page says which formula it uses.

Is what I type sent anywhere?

No. Height, weight, dates and the rest are worked out in your browser and never stored or sent.

Health and fitness calculators

The body, fitness and family calculators on Nouplo in one place: BMI, calories and sleep, training numbers, pregnancy and ovulation dates, and your pet’s age in human years. Everything you type stays in your browser.

Body, food and sleep
Training and running
Pregnancy and family
Pets

Body, food and sleep

⚕ BMI calculator One number, and what it is worth. ◔ Body fat calculator Your body fat percentage from a tape measure. ♨ Calorie calculator Your basal rate, your daily need and a target, with the working. ♨ Macro calculator Your calories, split into protein, carbs and fat. ◍ Water intake calculator How much to drink each day, from your weight. Zz Sleep calculator Wake up between sleep cycles, not in the middle of one.

Training and running

⊥ 1RM calculator Your 1RM from any set, and the loads for every percentage. ⇉ Pace calculator Pace, finish time and speed — for any distance. ⧗ Tabata timer 20 on, 10 off, 8 times. Go.

Pregnancy and family

♡ Pregnancy calculator The due date, how far along you are, and the dates ahead. ♡ Ovulation calculator Your fertile window and next periods, cycle by cycle. ▤ Maternity leave calculator Start, end, notice and paternity leave, from the due date. ⊕ Blood type calculator The blood groups a child can inherit, gene by gene.

Pets

⁂ Dog age calculator How old your dog is in human years — small dogs and big dogs age differently. ⁂ Cat age calculator How old your cat is in human years.

Frequently asked questions

Can these replace advice from a doctor?: No. They apply the usual published formulas to the numbers you enter and give an estimate for information. They cannot take your health into account; ask a doctor, midwife or dietitian about anything that matters to you.
Why do two calculators give different numbers?: Because there are several formulas for the same thing, such as body fat or daily calories, and each gives a slightly different estimate. Each page says which formula it uses.
Is what I type sent anywhere?: No. Height, weight, dates and the rest are worked out in your browser and never stored or sent.