Kutatua

Solve Something

Numbers are everywhere. But you don’t have to let them slow you down.

We’ve built a modern, mobile-friendly library of calculators that works: fast and always available.

Our tools are organized into clear categories, so you can find what you need in seconds:

➕ Basic & Complex Math

Basic arithmetic, percentages, areas and volumes. Statistics calculators, similarity calculuators, Fibonacci numbers, Mean, Variance, Standard Deviation, Kurtosis, Skewness to Combinatorics calculators.

➕ Financial & Business

Simple interest, compound interest, Trial Balance, Balance Sheet and its companion, the Common Size Balance sheet. M-PESA charges to VAT calculators.

➕ Science & Engineering

Scientific calculator like Power Consumption - Heating Time, Synchrronous motor speed and unit converters.

➕ Health & Fitness

BMI, BMR, body fat percentage, RDEE to the Ebbinghaus Forgetting Curve calculators.

➕ String Manipulators

SpongeBob Text Generators, uppercase/lowercase converters, Base64 encoders, Rot13 string converters to number-to-string converters.

➕ Date & Time

Past and future date calculators.

➕ Passwords & Entropy

Password strength, time-to-crack calculators and password generators.

Cosine Similarity calculator.

60 calculations

PAYE (2022) calculator.

49 calculations

PAYE (2021) calculator.

45 calculations

Basal Metabolic Rate (BMR) calculator.

44 calculations

Tanimoto Coefficient Similarity calculator.

44 calculations

Fibonacci Number calculator.

44 calculations

Password - Time To Crack calculator.

44 calculations

Jaccard Index, Jaccard Distance, Jaccard Similarity, Dice Coefficient calculator.

43 calculations

Compound Interest calculator.

42 calculations

Password Strength calculator.

42 calculations

PAYE (2020) calculator.

42 calculations

Synchronous Motor Speed calculator.

41 calculations

M-PESA Charges (2023) calculator.

41 calculations

PAYE (2019) calculator.

40 calculations

Ebbinghaus Forgetting Curve calculator.

40 calculations

PAYE (2023) calculator.

40 calculations

Past/Future Date calculator.

40 calculations

Resting Daily Energy Expenditure (RDEE) calculator.

40 calculations

Number-to-String calculator.

39 calculations

Body Fat Percentage calculator.

38 calculations

A visitor has used the Ebbinghaus Forgetting Curve calculator.

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12 Jul, 10:03 PM
12 Jul, 10:03 PM
22 03 12 Jul

A visitor has used the Cosine Similarity (Vector Method) calculator.

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12 Jul, 9:14 PM
12 Jul, 9:14 PM
21 14 12 Jul

A visitor has used the Cosine Similarity (Vector Method) calculator.

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12 Jul, 9:13 PM
12 Jul, 9:13 PM
21 13 12 Jul

A visitor has used the Inches Converter calculator.

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12 Jul, 8:49 PM
12 Jul, 8:49 PM
20 49 12 Jul

A visitor has used the Centimeters Converter calculator.

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12 Jul, 8:45 PM
12 Jul, 8:45 PM
20 45 12 Jul

A visitor has used the Past/Future Date calculator.

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12 Jul, 8:42 PM
12 Jul, 8:42 PM
20 42 12 Jul

A visitor has used the Ebbinghaus Forgetting Curve calculator.

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12 Jul, 8:35 PM
12 Jul, 8:35 PM
20 35 12 Jul

A visitor has used the Inches Converter calculator.

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12 Jul, 8:33 PM
12 Jul, 8:33 PM
20 33 12 Jul

A visitor has used the PAYE (2023) calculator.

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12 Jul, 6:59 PM
12 Jul, 6:59 PM
18 59 12 Jul

A visitor has used the Past/Future Date calculator.

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12 Jul, 5:35 PM
12 Jul, 5:35 PM
17 35 12 Jul

A visitor has used the Past/Future Date calculator.

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12 Jul, 4:51 PM
12 Jul, 4:51 PM
16 51 12 Jul

A visitor has used the Inches Converter calculator.

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12 Jul, 4:18 PM
12 Jul, 4:18 PM
16 18 12 Jul

A visitor has used the Jaccard Index, Jaccard Distance, Jaccard Similarity, Dice Coefficient calculator.

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12 Jul, 3:59 PM
12 Jul, 3:59 PM
15 59 12 Jul

A visitor has used the Cosine Similarity (Bag of Words) calculator.

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12 Jul, 2:59 PM
12 Jul, 2:59 PM
14 59 12 Jul

A visitor has used the Ebbinghaus Forgetting Curve calculator.

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12 Jul, 2:29 PM
12 Jul, 2:29 PM
14 29 12 Jul

A visitor has used the Megabytes Converter calculator.

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12 Jul, 2:20 PM
12 Jul, 2:20 PM
14 20 12 Jul

A visitor has used the Inches Converter calculator.

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12 Jul, 2:19 PM
12 Jul, 2:19 PM
14 19 12 Jul

A visitor has used the Permutations calculator.

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12 Jul, 2:07 PM
12 Jul, 2:07 PM
14 07 12 Jul

A visitor has used the Cosine Similarity (Bag of Words) calculator.

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12 Jul, 1:28 PM
12 Jul, 1:28 PM
13 28 12 Jul

A visitor has used the Meters Converter calculator.

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12 Jul, 1:14 PM
12 Jul, 1:14 PM
13 14 12 Jul

A visitor has used the Gigabytes Converter calculator.

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12 Jul, 1:14 PM
12 Jul, 1:14 PM
13 14 12 Jul

A visitor has used the Body Fat Percentage calculator.

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12 Jul, 1:14 PM
12 Jul, 1:14 PM
13 14 12 Jul

A visitor has used the Megabytes Converter calculator.

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12 Jul, 1:14 PM
12 Jul, 1:14 PM
13 14 12 Jul

A visitor has used the Height (centimeters, feet and inches) calculator.

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12 Jul, 1:14 PM
12 Jul, 1:14 PM
13 14 12 Jul

A visitor has used the Pixels Converter calculator.

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12 Jul, 1:14 PM
12 Jul, 1:14 PM
13 14 12 Jul

A visitor has used the Pounds (lb) Converter calculator.

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12 Jul, 1:14 PM
12 Jul, 1:14 PM
13 14 12 Jul

A visitor has used the Mean, Variance, Standard Deviation, Kurtosis, Skewness calculator.

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12 Jul, 12:41 PM
12 Jul, 12:41 PM
12 41 12 Jul

A visitor has used the Basal Metabolic Rate (BMR) calculator.

#calculator
12 Jul, 10:52 AM
12 Jul, 10:52 AM
10 52 12 Jul

A visitor has used the Gigabytes Converter calculator.

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12 Jul, 10:45 AM
12 Jul, 10:45 AM
10 45 12 Jul

A visitor has used the Body Fat Percentage calculator.

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12 Jul, 10:11 AM
12 Jul, 10:11 AM
10 11 12 Jul

  United States

709 calculations

  Japan

428 calculations

  Canada

152 calculations

  China

129 calculations

Anonymous Location

99 calculations

  France

58 calculations

  Germany

43 calculations

  Europe

41 calculations

  United Kingdom

26 calculations

  Ukraine

26 calculations

  Brazil

25 calculations

  Kenya

25 calculations

  Vietnam

17 calculations

  Netherlands

17 calculations

  Greece

15 calculations

  Mexico

15 calculations

  India

13 calculations

  Spain

11 calculations

  Colombia

11 calculations

  Turkey

11 calculations