One operating platform for focused directories and utilities.

HVAC Record

Plain-English HVAC contractor pages for US homeowners, built from public business profiles, service notes, and source checks.

Appliance Repair Index

Appliance repair directory for comparing local major-appliance repair companies using public business profiles and source checks.

Roofer Index

Roofing directory for comparing local roof repair, replacement, and storm-damage companies using public business profiles and source freshness signals.

Storage Unit Index

Self-storage directory for comparing local storage facilities using public business profiles and source freshness signals.

Plumber Index

Plumbing directory for comparing local plumbers using public business profiles and source freshness signals.

PaycheckLab

Free U.S. take-home-pay calculators that estimate net pay after 2026 federal income tax, Social Security, Medicare, and state income tax.

MortgageLab

Free mortgage calculators that estimate a full monthly payment — principal, interest, property tax, insurance, PMI, and HOA — from a home price and rate.

LoanLab

Free loan calculators that estimate the monthly payment, total interest, and total cost of a fixed-rate personal or installment loan.

AutoLoanLab

Free auto loan calculators that estimate a monthly car payment from the vehicle price, down payment, trade-in, sales tax, and rate.

SalesTaxLab

Free sales tax calculators that compute the tax and total price for a purchase, with sourced 2026 statewide base rates for every U.S. state.

HourlyLab

Free hourly-to-salary converters that turn an hourly wage into an equivalent annual, monthly, biweekly, weekly, and daily gross salary.

SalaryLab

Free salary-to-hourly converters that divide a gross annual salary into an equivalent hourly, daily, weekly, biweekly, and monthly rate.

CompoundLab

Free compound interest calculators that estimate future value, total contributions, and interest earned from a starting balance, rate, term, and optional monthly contribution.

CalorieLab

Free calorie calculators that estimate daily calorie needs with the Mifflin-St Jeor equation, adjusted for maintaining, losing, or gaining.

BMILab

Free BMI calculators that turn height and weight into a body mass index and WHO weight category, in metric or imperial units.

TipLab

Free tip calculators that turn a bill, tip percentage, and party size into the tip amount, total, and per-person share.

PercentLab

Free percentage calculators that find the percent of a number, the percent change between two values, and what percent one number is of another.

ROILab

Free ROI calculators that turn an initial cost and final value into net gain, return on investment, and annualized ROI for investments or marketing spend.

ConvertLab

Free unit converters for length, weight, volume, and temperature using standard SI and US-customary factors.

WordLab

A free word counter that counts words, characters, sentences, and paragraphs and estimates reading time, entirely in your browser.

DateLab

Free date difference calculators that measure the days, weeks, months, and years between two dates, accounting for leap years.

DiscountLab

Free discount calculators that turn an original price and a percent-off or amount-off discount into the sale price, savings, and tax-inclusive total.

AgeLab

Free age calculators that turn a date of birth into an exact age in years, months, and days, plus totals in months, weeks, and days.

GPALab

Free GPA calculators that turn course grades and credit hours into a weighted or unweighted grade point average on the 4.0 scale.

RetireLab

Free retirement calculators that project a balance and monthly contributions to retirement age, with 401(k) employer-match math and a withdrawal view.

InflationLab

Free inflation calculators built on BLS CPI-U annual averages: convert dollars between any years from 1913 to 2025, project future costs, and check a salary against inflation.

DebtLab

Free credit card payoff calculators that turn a balance, APR, and payment into a debt-free date and total interest, including a minimum-payment reality check.

GoalLab

Free savings goal calculators that solve the monthly deposit a goal and deadline require, how long a deposit takes, and the size of an emergency fund.

MarginLab

Free margin calculators that compute gross margin and markup from cost and price, and solve the selling price a markup or target margin requires.

TimeLab

Free time card calculators that total weekly hours from clock-in and clock-out times, split overtime at 40 hours, and turn hours into gross pay.

ConcreteLab

Free concrete calculators that turn slab, footing, or column dimensions into cubic yards and 40/60/80 lb bag counts, with a disclosed waste factor.

AreaLab

Free square footage calculators that measure rooms and odd shapes, then turn area into flooring cost and paint coverage estimates.

BreakEvenLab

Free break-even calculators that turn fixed costs, price, and variable cost into the units and sales dollars needed to cover costs.

BodyFatLab

Free body fat calculators that estimate body fat percentage from tape measurements (U.S. Navy method) or BMI — a screening estimate, not a medical measurement.

GradeLab

Free grade calculators that find the final exam score you need for a target grade, compute weighted course grades, and convert test scores to letters.

FractionLab

Free fraction calculators that add, subtract, multiply, and divide fractions exactly, simplify them, and convert fractions to decimals.

CapGainsLab

A free federal capital gains tax calculator for short-term and long-term gains using 2026 brackets and disclosed simplifications.

CarAffordLab

A free car affordability calculator that works backward from a monthly payment to the vehicle price it supports.

HelocLab

Free HELOC calculators that size your credit line from home value and CLTV, then price the interest-only draw payment and the repayment-phase payment.

RefiLab

Free refinance calculators that compare your mortgage against a new offer: monthly savings, the break-even month on closing costs, and lifetime interest — including cash-out.

RentBuyLab

A free rent-vs-buy calculator that totals renting against owning over the years you'd actually stay — mortgage, taxes, upkeep, and the equity recovered at sale included.

EstTaxLab

A free 2026 quarterly estimated tax calculator for freelancers: self-employment tax, federal income tax, and the safe-harbor payments that avoid an underpayment penalty.

AffordLab

A free home affordability calculator that applies the conventional 28/36 debt-to-income rule to your income, debts, and down payment and solves the purchase price it supports.

BTULab

Free BTU calculators that turn room size, ceiling height, sun, and climate into the heating or cooling capacity a space needs.

DueDateLab

Free pregnancy due date calculators that estimate a due date and gestational age from the last menstrual period, conception, or IVF transfer date.