Good Calculators

What Good Calculators does

Good Calculators is a privately held, bootstrapped UK-based operator of a free online calculator platform (goodcalculators.com) founded in 2015. The platform offers 360+ web-based calculators organized across 24+ categories including salary and income tax (US and UK), mortgage and loan amortization, retirement, statistics and analysis, engineering, HRM, logistics, date/time, unit conversions, sports and health, and 2D/3D geometry. Calculators run in the browser without registration or installation, work across computers, smartphones, and tablets, and return results with step-by-step explanatory walkthroughs. Underlying technology is a unified web application with deterministic formula logic; no app, API, SDK, or AI/ML components are disclosed.

The company's business model is entirely advertising-supported. All calculators are provided free of charge under a stated philosophy that internet information should be costless, and revenue is generated through third-party display advertising managed by Ezoic Inc. The go-to-market motion is product-led growth: users discover calculators via organic search, direct bookmarks, and social sharing buttons on the site, with no paid channels documented. The platform additionally distributes embeddable calculator widgets to third-party blogs and websites with customizable color, font, and size options, creating a partner-distribution channel beyond the core domain. Target customers are individual consumers seeking free calculation tools for personal finance, tax, health, and academic needs, plus a secondary segment of small business and HR users using tools for payroll, freight, and operations.

Name

Good Calculators

Legal name

Good Calculators

Website

https://goodcalculators.com

Company type

Private

Founded year

2015

Operating status

Operating

Short description

Good Calculators is a bootstrapped, UK-based private operator of a free, advertising-supported web platform offering 360+ browser-based calculators across tax, finance, mortgage, statistics, engineering, HRM, logistics, and health categories for global individual consumers and small business users.

Ownership category

akta.pro rank

Product category

Online Calculator Tools

NAICS

Exam Preparation and Tutoring (611691)

SIC

Calculating & Accounting Machines (No Electronic Computers) (3578)

akta.pro primary industry

Math Enrichment Curriculum, Workbooks & Question Banks (EDAMAEAG)

akta.pro secondary industry

Assessment Item Banks, Question Authoring & Test Development Content (EDAGADAG)

Keywords

• Online calculators
• Tax calculators
• Mortgage calculators
• Financial calculators
• Engineering calculators

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Markets served

GTM type

B2C

Offering type

Software

Cost components

Technology or R&D, Infrastructure, Personnel

Revenue model

1. Advertising Revenue: The website generates revenue through third-party advertisements and sponsored links. Ezoic Inc. manages advertising services including display advertisements, targeting, and optimization. Revenue is generated from ad impressions and clicks across the calculator pages.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

Good Calculators operates a free online platform offering over 360 web-based calculators across categories including finance, tax, mortgage, loans, statistics, engineering, health, and everyday utilities. All tools are accessible on any device with step-by-step explanations, monetized through advertising.

Product overview

Good Calculators is a free online calculator platform offering over 360 web-based calculators organized into 24 categories. The product functions as a unified web application with no software installation required, accessible across computers, smartphones, and tablets. The calculators span diverse domains including finance (tax, mortgage, loans, investments), mathematics (statistics, engineering, geometry), health and fitness, unit conversions, and lifestyle tools. All calculators provide step-by-step explanations of calculations. The platform also offers embeddable calculator widgets that can be added to third-party websites and blogs, providing customizable calculator functionality for external platforms.

Differentiator

Problem solved

Functional benefit

Products and services

• Salary & Income Tax Calculators Collection of calculators for US and UK salary calculations, tax brackets, tax withholding, and income-related computations including wage conversion and pay raise tools.
• Mortgage Calculators Tools for calculating mortgage payments, including PITI calculations, loan comparisons, down payments, and early repayment scenarios.
• Retirement Calculators Calculators for retirement planning including 401(k) projections, retirement savings estimates, and state pension age calculations.
• Statistics and Analysis Calculators Over 40 statistical tools including standard deviation, regression calculators, probability tools, ANOVA, and data visualization generators for charts and histograms.
• Engineering Calculators Technical calculators for engineering applications including metals weight, thermal expansion, flow rate, voltage calculations, and circuit analysis tools.
• Date and Time Calculators Time-related tools including age calculators, days between dates, timesheet calculations, and elapsed time conversions.
• Sports & Health Calculators Health and fitness tools including BMI, body fat percentage, calorie calculators, pregnancy calculators, and fitness test assessments.
• Conversion Calculators Unit and format conversion tools spanning scientific notation, data storage, distance, temperature, currency, cooking measurements, and clothing sizes.
• Calculator Widgets Embeddable calculator widgets available for third-party websites and blogs, with customizable color, font, and size options. Includes VAT Calculator, Dividend Tax Calculator, Wage Conversion Calculator, Sig Fig Calculator, Water Intake Calculator, and VA Disability Calculator widgets.
• Volume Calculators 3D shape volume calculators for cones, cubes, cylinders, ellipsoids, pyramids, spheres, and irregular prisms.
• 2D Shape Calculators Two-dimensional geometry tools including polygon calculations, arc measurements, circle computations, and Pythagorean theorem calculators.
• 3D Shape Calculators Three-dimensional geometry calculators for cylinders, pyramids, prisms, spheres, and egg surface area/volume calculations.
• Loan Calculators Personal and business loan calculation tools including student loan repayment, car loans, personal loans, debt snowball, and credit card repayment calculators.
• Sales & Investments Calculators Financial analysis tools covering ROI, EBITDA, profit margins, inventory turnover, investment returns, and real estate calculations.
• Forex Calculators Currency trading tools including margin calculations, Fibonacci retracement levels, and pivot point analysis.
• HRM Calculators Human resources management tools for holiday entitlement, overtime calculations, PTO tracking, Bradford Factor, cost per hire, and employee turnover rate analysis.
• Logistics Calculators Shipping and freight calculation tools including freight class determination, volumetric weight, and freight density calculations.
• Other Calculators Miscellaneous tools including concrete calculations, tile and paint estimators, fuel economy, IP subnet calculations, and lifestyle tools like pizza ordering and pregnancy calculators.

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators1 record

Recent moves5 records

Expansion highlights4 records

Market position

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/GoodCalculators

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Good Calculators