Free Cooking & Food Tools & Calculators
Browse 26+ free interactive cooking & food calculators, estimators, and utilities. 100% free, private, and runs directly in your browser without signup.
Alcohol Dilution Calculator (C1V1=C2V2) — ABV & Proof | nrtechstudio.com
Free alcohol dilution calculator: C1V1=C2V2 for spirits and homebrew. Enter start ABV, target ABV and volume — get water to add, final volume, ABV/Proof toggle and a what-if dilution table.
Bacon Curing Calculator — Prague Powder #1, Salt & Sugar by Weight (USDA ppm Limits)
Free bacon curing calculator: exact Prague Powder #1 (6.25% nitrite) in grams + teaspoons, salt and sugar for dry cure and wet brine, with USDA 9 CFR 424.22 ingoing nitrite limits (120 ppm wet / 200 ppm dry-cured bacon). Cure-time estimator by thickness.
Baker's Percentage Calculator — Convert Recipes to Baker's % & Scale Formulas
Free baker's percentage calculator: convert any bread recipe to baker's percentages (flour = 100%), compute true hydration including preferment, and scale any formula by flour weight or total dough weight. Levain, poolish & biga supported.
Cake Serving Calculator — Servings, Batter & Frosting Planner
How many servings per cake pan, batter cups and frosting amounts from the Wilton serving guide. Two-way solver, tiered planner, metric + US.
Dry to Cooked Pasta Calculator | nrtechstudio.com
Convert dry pasta weight to cooked and back with per-shape yield ratios (spaghetti 2.60x, penne 2.25x, ...), a serving planner, and boiling-water recommendations.
Fresh to Dry Herb Conversion Calculator — nrtechstudio.com
Convert fresh herbs to dried herbs and back. Per-herb ratios (3:1 general, 2:1 for basil & parsley), tsp/tbsp/cup/grams/ounces, quick conversion chart, worked examples.
Pizza Comparison Calculator — Compare Pizza Value by Size | nrtechstudio.com
Compare up to 3 pizzas by diameter and price: area in square inches, price per sq inch, price per slice, value ranking and % savings. Free, instant, no sign-up.
Steak Cook Time Calculator | nrtechstudio.com
Steak cook time calculator: grill, pan-sear, broiler & reverse-sear times by thickness and doneness. Pull temps, rest times, USDA 145°F chart. Free tool.
Turkey Defrost Calculator — USDA Thawing Times (Fridge, Cold Water, Microwave)
Free turkey defrost calculator: USDA-based thawing times for refrigerator (24h per 4-5 lb), cold water (30 min per lb) and microwave methods, plus a reverse planner that tells you when to start thawing.
Turkey Size Calculator — How Much Turkey Per Person | nrtechstudio.com
Holiday turkey planner: size per person, thaw time, roast, fry and smoke times at USDA-safe 165°F, plus side-dish scaling. Free tool, runs in your browser.
Uncooked to Cooked Rice Calculator — Rice Yield, Water Ratio & Servings
Free uncooked to cooked rice calculator: convert uncooked rice to cooked yield for white, basmati, jasmine, brown & wild rice. Get water needed, servings per person, and reverse cooked-to-uncooked conversion.
BBQ Grill Size Guide
BBQ grill size calculator: enter guests, grill type and cooking style to get recommended cooking area, burner count, BTU range and patio fit. Free tool.
Brisket Cooking Time Calculator
Brisket cooking time calculator: per-pound smoke times for 225–300°F, wrap factors, stall coach, rest planner & serve-time timeline. Free, no signup.
Chicken Cook Time Calculator
Free chicken cook time calculator: whole chicken min-per-lb for oven, grill & air fryer, per-part time tables, rest planner, and USDA 165°F safety guide.
Coffee Carbon Footprint Calculator — CO₂e per Cup, Day & Year
Free coffee carbon footprint calculator: pick your brew method, milk type and cups per day to get CO₂e per cup, day and year, with a reduction planner, tea/soda comparisons and emission-factor table.
Cooking Conversion Calculator
Free cooking conversion calculator: volume units, 88-ingredient cups-to-grams database, butter sticks, oven °F/°C/gas mark and quick recipe scaling.
Crab Cook Time Calculator — Steam, Boil, Bake & Grill Times
How long to cook crab by type: steam, boil, bake and grill times for blue, Dungeness, snow, king and stone crab — whole, clusters and legs.
Egg Boiling Time Calculator
Free egg boiling time calculator based on the Williams physics equation. Size, fridge vs room temp, doneness, altitude and cold-start aware. With timer.
Grocery Budget Calculator — USDA Monthly Food Budget Planner
Grocery budget calculator with USDA food plan costs (Aug 2026): monthly budget by household size and age, spending tracker, what-if scenarios. 100% in-browser.
Ham Cooking Time Calculator
Ham cooking time calculator: spiral, pre-cooked, raw and country ham minutes-per-pound at 325°F, USDA 140°F/145°F targets, glaze timing, rest & slow-cooker.
Kitchen Remodel Cost Calculator
Kitchen remodel cost calculator: estimate renovation cost by sq ft, tier & scope. Category breakdown, resale ROI & budget planner. Free, no signup.
Lobster Cook Time Calculator — Boil, Steam, Grill & Doneness
How long to cook lobster by weight: exact boil, steam and grill times for 1–3 lb whole lobsters and tails, 140°F doneness check, thawing guide, and a full time chart.
Prime Rib Cooking Time Calculator
Prime rib cooking time calculator: 3 methods (low-and-slow, sear-then-roast, 500 rule), min/lb by doneness, pull temps, carryover, rest and serving planner.
Shrimp Cook Time Calculator \u2014 Saut\u00e9, Grill, Boil, Steam & Doneness
How long to cook shrimp? Sauté, grill, boil, steam, bake & air fryer times by shrimp size (16/20–41/50), 120°F doneness checker, and full time charts.
Slow Cooker Conversion Calculator
Convert any oven recipe to slow cooker time: instant LOW and HIGH settings, slow-cooker-to-oven reverse, LOW↔HIGH swap, temp chart and food presets. Free.
Wedding Cake Cost Calculator: Price by Serving & Tier
Estimate wedding cake cost by servings, tiers and fondant vs buttercream. Includes delivery, cutting fees and a bakery vs grocery vs DIY per-serving comparison.
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How to Use the Tools Directory
Every tool is a single interactive page: enter your inputs, get instant results, no account needed. Use the search box (shortcut: press /) to jump straight to a tool, or browse categories when you are exploring. Each card links to the tool's permanent URL, which you can bookmark or share.
Because all computation happens in your browser, the tools are fast, private, and free forever. If a result looks wrong, use the one-click report control on the tool page so it can be fixed.
Tool Categories at a Glance
| Category | What you will find | Example tasks |
|---|---|---|
| Developer | Encoders, formatters, regex, network tools | Format JSON, test regex, subnet a network |
| Finance | Tax, loans, salary, investing | Estimate tax brackets, amortize a loan |
| Home improvement | Estimators, measurements, materials | Size a wire, estimate paint or flooring |
| Health & fitness | Body metrics, nutrition, workouts | Track BMI, plan calories, score fitness tests |
| Math & science | Converters, geometry, statistics | Convert units, solve triangles |
| Text | Counters, sorters, generators | Count words, alphabetize a list |
| Color | Pickers, converters, checkers | Convert HEX to RGB, check contrast |
| Everyday life | Cooking, travel, automotive, pets | Convert recipes, plan fuel costs |
Popular Tasks and Where to Start
| I want to... | Start with | Why |
|---|---|---|
| Convert between number bases | Binary Converter | Step-by-step base conversion with charts |
| Validate and format data | JSON Formatter | Pretty-print and check JSON instantly |
| Count words for an essay | Word Counter | Words, characters, reading time |
| Check password strength | Password Strength Meter | Entropy-based strength scoring |
| Grade text readability | Readability Score | Flesch-Kincaid and grade levels |
| Audit color contrast | Accessibility Checker | WCAG contrast ratios in one click |
Tools Directory FAQ
What is the NRTechStudio tools directory?
It is a free catalog of more than 2,700 interactive web tools: calculators, converters, generators, and checkers for developers, finance, home improvement, health, education, and everyday tasks.
Are all the tools really free?
Yes. Every tool in the directory is free to use with no sign-up, no trial, and no paywall. They run entirely in your browser.
Do I need to create an account?
No. There are no accounts, logins, or subscriptions. Open a tool and use it immediately.
Is my data private when I use these tools?
Yes. The tools are 100% client-side: your inputs are processed by JavaScript in your own browser and never sent to a server.
How do I find the right tool?
Use the search box at the top of the directory (press / to focus it), or browse by category. Every tool card shows a short description of what it computes.
Do the tools work on mobile?
Yes. The directory and the tools use responsive layouts that adapt to phones, tablets, and desktops.
How many tools are there?
The directory holds more than 2,700 tools and grows regularly as new calculators and converters are published.
Can I request a new tool?
Yes. Each tool page has a report/feedback control you can use to request features or new tools; requests help prioritize what gets built next.
Are the tools accurate?
Calculators use published formulas and reference data (tax tables, NEC ampacity, standard conversions). Each tool page documents its method, and issues can be reported in one click for a fix.
Do tools work offline?
Once a tool page has loaded, most tools keep working without a connection because the logic is client-side JavaScript. The directory search needs the page loaded first.
What categories are covered?
Developer utilities, finance and tax, home improvement, health and fitness, math and science, text tools, color tools, networking, education, and everyday life calculators, among others.
Can I bookmark or share a tool?
Yes. Every tool has its own permanent URL under nrtechstudio.com/tools/, which you can bookmark or share directly.
Is there an API for these tools?
The tools are interactive web pages, not API endpoints. The underlying math is plain JavaScript you can inspect in the page source.
Why do some tools show ratings?
Ratings aggregate user feedback to surface the most trusted tools and flag pages that need fixes or better explanations.
How often are new tools added?
New tools are published on a continuous pipeline, prioritized by measured search demand and by user requests from the feedback controls.
Who builds these tools?
NRTechStudio, an independent tools studio focused on free, private, client-side utilities that respect user privacy.