SpecWhale tool collections

Fast calculators for PPI, aspect ratios, print size, video bitrate, file size, camera specs, audio timing, and storage planning.

Browser-based tools for image resizing, compression, checksums, QR codes, SVG conversion, text files, and PDF page checks.

Local developer utilities for JSON, CSV, Base64, URLs, regex, schema, robots.txt, sitemaps, Open Graph, HTTP, DNS, and CSS.

Common measurement converters for length, weight, area, volume, temperature, pressure, energy, power, data, speed, and time.

Calculators for percentages, discounts, margins, unit price, ads, email, SaaS metrics, customer acquisition, and operating ratios.

Planning calculators for loans, mortgages, interest, payoff, savings, investment returns, rent, property tax, and inflation.

Date calculators for days between dates, business days, deadlines, time zones, pay periods, age, countdowns, and fiscal planning.

Home project calculators for paint, flooring, tile, concrete, mulch, roofing, drywall, lawn, solar, lighting, water, and airflow.

Student-friendly tools for ratios, geometry, statistics, algebra, physics, chemistry, SI prefixes, and reference tables.

Wellness calculators for BMI, BMR, TDEE, heart rate zones, pace, macros, water, protein, calories, steps, and race times.

Travel utilities for country lookup, currency/calling codes, weather, holidays, fuel, luggage, time zones, hotels, and road trips.

Local generators for passwords, passphrases, random numbers, teams, names, colors, usernames, dice, and text redaction.