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Log your dives in seconds. Know your limits before the next one.

Three taps to log a dive

The free dive log for recreational divers.
Three taps to log a dive, real residual nitrogen before the next one,
and all your stats, sites, gear and certifications in one place.

Free forever, no credit card
Start logging free

Secca dei Monaci

Saved site · one tap

Depth

21.3 m

Time

47 min

Gas

EAN32

Logged in 18 seconds, buddy tagged

5.0

Join the divers who log every dive in seconds and never guess their next one.

Why divers choose Depthlog

Fast dive logging

Log every dive in seconds

Open Depthlog on the boat and log the dive in three taps, under 20 seconds.
Save a dive site once: its coordinates, depth and conditions come back next time.

  • 3 taps, under 20 seconds
    Pick the site, confirm, save. No forms to fight while your tank is still wet.
  • Your sites, ready to reuse
    Save a spot once. Coordinates and site details come back on every log.
  • Built for the boat
    Mobile-first web app. Nothing to install, nothing to sync, no wet paper to lose.
Start logging free

New dive

Tap through and save

Under 20 s
Pick site
Confirm gas
Save

Saved sites

Secca dei Monaci

Tyrrhenian Sea · Italy

Last dive

LST Shipwreck

Ponza · Italy

Built for the boat. Nothing to install, no wet paper to lose.

Repetitive dive planning

Know your real limits before every dive

Enter your first dive, the surface interval and your next depth.
Depthlog returns your pressure group, your residual nitrogen penalty and the bottom time you actually have left.

Built on standard recreational dive tables. Air and Nitrox up to EAN40. Free, no account needed.

  • SAC calculator
    Compute your true Surface Air Consumption with an advanced algorithm.
  • Nitrox calculator
    Compare Nitrox with air and see the pros and cons of enriched air.
  • Best Nitrox mix
    Find the optimal oxygen percentage for your target depth.
  • CNS oxygen clock
    Track cumulative CNS oxygen exposure across multiple dives.
  • Tank autonomy
    See how long your tank lasts at a given depth based on your SAC rate.
  • Minimum gas
    Calculate your rock bottom turn pressure for a safe ascent.
Open the full plannerAll free dive computers

Repetitive dive planner

Try it live
m
min
min
m
min
Start NADive 1 ends HAfter 120 min → GDive 2 ends K
Residual penalty (RNT)
+0 min
Nitrogen carried from dive 1, in minutes at 15 m
NDL at 15 m
0 min
Max bottom time for a first dive at this depth
Available bottom time
0 min
NDL minus your residual penalty
You have 43 min of bottom time left at 15 m
Planned bottom time 24 min plus a +49 min residual penalty. About 19 min to spare.
Open the full planner
Dive sites and map

Your dive sites, ready to reuse

Save the spots you dive once, then log a dive there in one tap.
Share a site with a buddy, or flip to the map and see your whole diving footprint.

Save your first site

Saved dive sites

Log a dive there in one tap

Your map

Secca dei Monaci

Tyrrhenian Sea · Italy

24 m

LST Shipwreck

Ponza · Italy

Shared

Cristo del Circeo

Lazio · Italy

19 m

Flip to the map and see your whole diving footprint.

Analytics and insights

Watch your diving improve

SAC going down. Bottom time managed better. CNS kept in check.
Depthlog turns your logs into trends you can act on, the way you already expect from Strava and Garmin.

See your stats

Your diving, in numbers

Updated after every dive

SAC tracking
Average SAC0L/min
−15%

Dives logged

0

Max depth

0m

Time underwater

0h

Coldest dive

0°C

Your average SAC is down to 16.4 L/min from 19.4 at the start of the year. Steadier breathing and better weighting are showing up in the numbers.

Trends you already expect from Strava and Garmin, now for your diving.

Depthlog AI

A dive coach that never does the math wrong

Ask in plain words: your next NDL, your average SAC on a trip, what to fix before the next dive.
Every number is computed by Depthlog from the real tables, then shown with the tool that produced it.

Part of Supporter. The free logbook, planner and analytics stay free forever.

  • Figures from the real tables
    NDL, RNT, MOD, SAC and CNS are computed by Depthlog, never guessed by the model.
  • Reads your whole journey
    Stats, records and trends from your own dive logs, in plain conversation.
  • Log from a photo or file
    Paste a dive file or a photo of your computer screen and the coach fills the log for you.
See Supporter plansTry a free calculator
Marco
How is my SAC trending this year?
Your average SAC is down to 17 L/min from 19 at the start of the year. Steadier breathing and better weighting are showing up in the numbers.
Computed by Depthlog: SAC trend
Equipment tracker

Keep your gear under control

Track regulators, tanks, wetsuits, computers and fins.
Depthlog remembers the last service, computes the next revision and reminds you before it is due, so nothing catches you off guard before a trip.

  • Never miss a revision
    Depthlog computes the next service date and flags every piece of gear as OK, due soon or overdue.
  • Service history per item
    What was done, when and by whom, for every regulator, tank and wetsuit you own.
Track your gear

Gear & revisions

Serviced, tracked, remembered

2 due soon

Apeks XTX50 regulator

Serviced 11 months ago

Service due soon

Suunto D5 computer

Battery 78%

OK

Mares 5 mm wetsuit

Last used 3 weeks ago

OK

Scubapro 15 L tank

Visual inspection due

Overdue

Reminds you before a revision is due, so nothing catches you off guard.

Track gear from all major brands

AqualungScubaproMaresCressiApeksAtomic AquaticsOceanicSuuntoShearwaterSeacHollisPoseidonZeagleHalcyonDive RiteTeclineXDeepScubaone
AqualungScubaproMaresCressiApeksAtomic AquaticsOceanicSuuntoShearwaterSeacHollisPoseidonZeagleHalcyonDive RiteTeclineXDeepScubaone
AqualungScubaproMaresCressiApeksAtomic AquaticsOceanicSuuntoShearwaterSeacHollisPoseidonZeagleHalcyonDive RiteTeclineXDeepScubaone
AqualungScubaproMaresCressiApeksAtomic AquaticsOceanicSuuntoShearwaterSeacHollisPoseidonZeagleHalcyonDive RiteTeclineXDeepScubaone
Diving certificates vault

Your certifications, one link away

Centralize every certification from the major agencies.
Share a public certificate page with a single link: anyone can open it and download the card image.

  • One link per certificate
    No more searching the phone gallery for a photo of your card.
  • Download-ready image
    Anyone with the link can download a clean certificate card.
Store your certificates

Certificates vault

Every agency, one place

Share by link
PADI

Advanced Open Water Diver

PADI · issued May 2023

Verified

depthlog.net/certificates/marco

Nitrox EAN40Deep DiverRescue Diver

Anyone with the link can open it and download the card image.

Supports the most famous diving agencies

PADISSICMASFIPSASNAUIBSACSDI/TDI/ERDIRAID
PADISSICMASFIPSASNAUIBSACSDI/TDI/ERDIRAID
PADISSICMASFIPSASNAUIBSACSDI/TDI/ERDIRAID
PADISSICMASFIPSASNAUIBSACSDI/TDI/ERDIRAID
Easy migration to Depthlog

Import and export your logs

You have all of your logs in an external application?
No problem, with Depthlog you can use the import system to migrate all of your logs using different formats.

How can I import my logs?

Dive computers often use proprietary software, but with the free Subsurface application you can read logs from computers and import them into Depthlog using various supported formats.

Supports the most diffused log formats

trat profile

FAQs

Wall of love

Divers from Open Water to technical instructors use Depthlog every day.
Here is what they say about logging their dives with us.

Rated 5.0 by the divers who log here
Real reviews, no paid placements. From weekend divers to full-time instructors.
Depthlog has every feature I've ever wanted in a dive log. I really appreciate its simple design and intuitive features. Loved it so far and will always recommend to anyone!
Steve

Steve

Technical diver & Instructor

Cannot believe how easy and straightforward it is to use this app even though it is surprisingly detailed! Once you try it you won't go back.
Lorenzo

Lorenzo

Advanced Open Water

Finally a service that allows me to log all my dives quickly and intuitively. Viewing my logs on a map is fantastic, it lets me easily share my favorite spots and revisit unforgettable dives!
Enrico

Enrico

Open Water

Depthlog is an amazing tool that every scuba diver should be using. It makes scuba diving even more enjoyable. Who knew that was even possible?
Otto

Otto

Founder of Deepbluecoast

I love the ease and accessibility of Depthlog. As an instructor who works with a huge range of dive abilities from Open Water to Technical, Depthlog has features for everyone!
Rosemarie

Rosemarie

Technical diver & Instructor

An innovative and intuitive application with constant updates. Really love the global map: as I log new dives I can visually identify all my diving spots around the world.
Anna

Anna

Technical diver

A fast way to log the info I want and have it accessible anywhere with global statistics and metrics. Plus, no more photo search on the phone gallery for diving certifications!
Fabio

Fabio

Advanced Open Water

Used to guess my SAC, so repetitive dives were a shot in the dark. Now Depthlog keeps my stats in one place and I know what I have before I get back in. Logging here beats pairing my Bluetooth computer.
Alessandro

Alessandro

Advanced Open Water

As a beginner, this app has been a game changer. Logging is so quick that I actually keep up with it, and seeing my SAC and depth improve has done wonders for my confidence underwater. It is officially part of my dive gear now.
Riccardo

Riccardo

Open Water

Depthlog is free forever

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