Calorie calculator
RestinCal's most extensive tool for nutrition and food energy.
Free calculator web app for everyday life
RestinCal – calculators for all your everyday calculations
Calculate a savings goal, mixing ratio, battery runtime or daily travel budget with RestinCal – quickly, privately and directly in your browser.
For quick access, add RestinCal to your device's home screen or desktop. Your calculators will always be close at hand.
🔥Calorie calculatorNutrition and goals📓Food diaryNutrition tracking💰Savings goal calculatorMoney and goals⛽Fuel cost calculatorVehicles
Press a card to open its calculator
Popular calculators
Start with one everyday calculation
Each calculator opens on its own page, explains the calculation and processes your values directly in your browser.
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Savings goal calculatorEstimate when you will reach your savings goal.
Open →⚗️Mixing ratio calculatorDivide an amount into two parts using a ratio.
Open →🔋Battery runtimeEstimate runtime from capacity and load.
Open →🧳Daily budgetDivide travel spending money across your days.
Open →🛒Family food budgetCalculate food spending per person and day.
Open →🏃Marathon pace calculatorConvert a target time into pace per kilometre.
Open →🏠Home price per square metreCompare property prices per square metre.
Open →💼Gross marginCalculate gross margin in money and as a percentage.
Open →RestinCal currently includes 29 everyday calculators.
Show all calculatorsAll calculator categories
Find the right calculator by topic
Eight clear categories take you to the right section of the calculator directory. You can also use the search on the calculators page.
Business and entrepreneurshipMargins, customer acquisition and projects.Date, time and workAge, date differences and deadlines.Digital technologyDPI, batteries, electricity and mixing ratios.Family, pets and everyday lifeFood budgets, parties and pet food.Food and kitchenOven temperatures and raw-to-cooked conversions.Housing and propertyHome prices and rent per square metre.Sports and exercisePace, sets, training volume and 1RM.TravelTravel budgets, daily budgets and time differences.
Simple and private
Your calculators travel with you without a mandatory account
The new everyday calculators work directly in your browser. RestinCal's original nutrition and tracking tools remain available alongside them.
100% freeNo paywall or hidden fees.
No mandatory sign-inOpen a calculator and start immediately.
Calculated in your browserValues entered in the new calculators are not sent to the cloud.
Installable web appAdd RestinCal to your home screen or desktop on supported devices.
Favourites on your deviceKeep your regular calculators close at hand.
Share resultsSend a calculator with its input values to a friend.
Blog
Motivation is a myth: routines decide
Why do routines beat motivation in weight loss? Learn how automating your daily routine helped shed nearly 40 kg and how to build lasting habits.
Blog
Hidden calories: why the scale won't move
Why does weight loss seem to stall even when, on paper, everything should be perfectly fine? Read how hidden calories add up in everyday life.
Blog
How to Cut Calories in Everyday Life
Lasting fat loss is built with small, almost unnoticeable tweaks to familiar everyday foods. See how I cut calories using eggs, and how tiny daily savings add up over a year.
Blog
Making Calorie Counting Easier
Was calorie counting a source of stress or a tool for managing everyday life? A personal story about finding balance without unnecessary stress after losing nearly 40 kg.
Blog
What Is BMR and How Is It Calculated?
BMR (basal metabolic rate) tells you how many calories your body burns at rest. Learn how BMR is calculated with the Mifflin-St Jeor formula and how it differs from TDEE.
You have seen five selected articles.
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Recipe
Omelette roll with minced meat
A protein-rich baked omelette roll with a creamy minced meat filling, an easy oven dish. Nutrition per serving and per 100 g. 6 servings, 60 minutes.
Recipe
Chicken and tofu wok
A Thai-inspired chicken and tofu wok, an easy, quick weeknight recipe. Nutrition per serving and per 100 g. 4 servings, 30 minutes.
Recipe
Apple cinnamon bake
A light, low-calorie apple cinnamon bake with an oat crumble, an easy dessert. Nutrition per serving and per 100 g. 6 servings, 45 minutes.
Recipe
Creamy chicken pasta
Creamy chicken pasta with cooking cream, an easy everyday recipe. Nutrition per serving and per 100 g. 4 servings, 30 minutes.
Recipe
Low-calorie blueberry pie
A light, low-sugar and low-calorie blueberry pie with a quark filling, an easy recipe. Nutrition per serving and per 100 g. 8 servings.
You have seen five selected recipes.
Continue to more recipesBehind RestinCal
Do you have an idea that should become a working online service?
I design clear websites, build chatbots that fit their host site and help make digital services easier to use. RestinCal is my practical example of turning an idea into a useful online service that continues to improve.
Johannes PakkanenSocial media content creation, websites, chatbots and the development of other digital services
Your website's chatbot
I guide visitors, answer common questions and help them find the right service.
Portfolio 2026 · YouTube and TikTok
English-language content for an audience around the world
I built and managed an English-language YouTube and TikTok project in 2026. Most of my active contribution took place from January to May 2026. Since then, the figures have continued to grow with relatively little maintenance. These are the cumulative figures at the time of writing.
YouTubePrimarily long-form videos
4,087,583impressions
772,014views
6.9%impression CTR
+1,600subscribers
15,100 hwatch time
629 days 4 hwatch time in days
I also designed the video thumbnails myself. I aimed to make them clear and appealing without promising something the video did not deliver. CTR remained above 7% at its best. The cumulative CTR is now 6.9% and has declined during the latest roughly 200,000 impressions while I have not been publishing new content.
Most-viewed long-form videos · 2026
1st video29,531
2nd video28,985
Most-viewed Shorts · 2026
1st video39,962
2nd videoover 37,000
The channel was not limited to a Finnish audience. The videos were watched around the world, and I learned to analyse viewing data, topic performance and how different content reaches different audiences.
Audience by countryYouTube Analytics
TikTokSupporting channel
586.2Kviews
4,200profile views
29,100likes
11,300shares
676comments
178,000most-viewed video
TikTok was not the main focus of the project, but I gained experience managing an account, running TikTok advertising and creating vertical videos for Shorts, Reels and TikTok. The most-viewed video reached 178,000 views and the second 76,600. There were also many videos below 30,000 views – comparing them taught me how to read content data in practice.
Data analysis and growthShow detailsHide details⌄
I compared reach, click-through rate, viewing and audience data and used the findings to improve later releases.
My own merch and clothing shopShow detailsHide details⌄
I managed my own shop and gained practical experience in graphic design and combining content, visual identity and a commercial offering.
Livestreams and communityShow detailsHide details⌄
I hosted English-language livestreams and received positive feedback, while learning how to present and interact with an audience live.
Self-directed expertise
AI as a practical tool
I am especially interested in using AI to make real tasks smoother and build genuinely useful solutions.
I have strong, self-taught practical expertise in applying generative AI. I have spent hundreds of hours studying it and have used it successfully in my projects for planning, content creation, problem-solving and development.
I have compared services from different AI providers and the language and multimodal models behind them through hands-on testing. I have also paid for more advanced versions myself so I could evaluate their real differences for different use cases.
Elements of AI: Introduction to AI · 2 ECTSUniversity of Helsinki Open University · course completed and certificate received
Course details ↗Website design
Clear landing pages, responsive layouts and improvements to the usability of an existing website.
From idea to working page →Custom chatbots
A branded help or FAQ bot with tailored answers, animations and a feedback feature.
Lightweight, without mandatory AI service →Consulting
Practical ideas for user experience, content structure, search visibility and new features.
A clear way forward →Maintenance and further development
Agreed updates, reviewing feedback and improving the service after launch.
One-off delivery or ongoing support →Direct contact with the person doing the workScope and price agreed in advanceOne-off delivery is also available
Have a project in mind?Tell me about your idea and let’s see how it could be built.
Frequently asked questions
Short answers about using RestinCal, its free access and how data is handled.
Is RestinCal free?
Yes. RestinCal's tools are available free of charge without a paywall.
Do I need an account?
You do not need an account to get started. Sign-in is required only when you want cloud storage and synchronisation between devices.
Where do food and nutrition values come from?
Data comes from the food databases used by the service and user entries. Always check the current value on the product packaging.
Does RestinCal replace a healthcare professional?
No. RestinCal is a self-tracking tool and does not provide a diagnosis or individual treatment advice.
Questions or feedback?
Contact usThe contact page has our support email and guidance for getting in touch.