Company
About Do The Calculation
Do The Calculation is a free calculator platform built for people who need clear estimates, transparent formulas, and practical planning tools — built and maintained by real people who care about accuracy.
Why we exist
Our mission
We started Do The Calculation because most online calculators return a single number with no context. Our goal is to make everyday financial, business, health, math, and utility calculations easier to understand — showing not just the answer, but the formula behind it, the assumptions that matter, and what to check next.
The platform is built as a long-term public tool library: fast pages, simple controls, educational content alongside every tool, and reusable systems that scale as we add new calculators and templates. We currently maintain over 100 free calculators, 90+ educational guides, and downloadable spreadsheet templates.
Accurate by design
Every calculator uses explicit, documented formulas with readable assumptions and full result breakdowns so you can verify the math yourself.
Practical first
Pages are built for quick decisions. Inputs, results, worked examples, and next steps stay easy to scan on any device.
Privacy aware
All calculations run entirely in your browser. No personal data is transmitted to our servers, and saved calculations are stored locally.
Who we are
Our team
Do The Calculation is maintained by a small team focused on building accurate, well-documented calculator tools.
Sheharyar Shahid
Founder & Lead Editor
Software engineer with experience in financial technology and data-driven web applications.
Focus areas: Financial calculators, business tools, site architecture
DTC Editorial Team
Content Review Board
Subject-matter contributors who review calculator accuracy, guide content, and formula documentation.
Focus areas: Health & fitness, math & science, utility tools
How we build content
Editorial methodology
Every calculator and guide on the site follows a structured review process before publication.
Formula verification
Calculator formulas are sourced from established references — IRS publications for tax calculations, WHO guidelines for health metrics, standard financial mathematics for loan and interest formulas. Each formula is tested against known correct outputs before release.
Content review process
Educational guides are written by contributors with subject-area familiarity. All content is reviewed for factual accuracy, clarity of explanation, and practical usefulness before publishing. Financial and health content includes appropriate disclaimers about professional consultation.
What we build
The site is organized around useful tools, supporting content, and spreadsheet resources that connect back to real planning workflows.
100+ calculator pages
Focused tools for mortgages, loans, investing, taxes, business margins, health estimates, dates, grades, units, and more — each with formula documentation and worked examples.
Templates and guides
Downloadable spreadsheet templates and 90+ educational articles that help users move from a quick estimate to a more complete plan with deeper understanding.
Trust & transparency
Our operating standards
- Calculator assumptions are always visible and easy to review — we never hide inputs that affect the result.
- We use plain language around estimates, limitations, and professional-advice boundaries for YMYL (Your Money Your Life) topics.
- Formulas are sourced from recognized authorities: IRS publications, WHO/CDC guidelines, standard financial mathematics textbooks.
- Pages are built for speed and accessibility — fast loading, mobile-friendly, and usable with assistive technology.
- We do not sell or share personal calculator inputs. Saved calculations are stored in your browser only.
- Legal and policy pages are kept readable, direct, and easy to find.
Important context
Need a calculator improved or added?
Send a request with the calculator, formula, or workflow you want to see. Practical requests help shape the next pages we build.