FREE TOOLS

Demurrage and Detention Calculator

Calculate container charges based on type, arrival and pickup dates

Explore our free calculators and tracking tools

Seadex deciphers shipping line to ensure compliance with maritime regulations, industry standards, fuel consumption and risk management

Container Tracking

Type a container number and see its spot on the map, latest status events, and when it should reach the next stop.

Try container tracking tool

Vessel Tracking

Enter a ship's IMO or MMSI and watch its live location, speed, and the port it's heading toward.

Try vessel tracking tool

CO2 Emission Calculator

Pick start and finish ports to get a quick number showing how much CO2 that sea trip will create.

Try CO2 emission calculator

Port Congestion Level

Choose any port and find out how many ships are queued, how long they wait, and if it's getting better or worse.

Try port congestion monitor

Demurrage Detention Calculator

Calculate container charges based on type, arrival and pickup dates.

Try D&D calculator

Free ETA Calculator

Calculate the estimated time of arrival (ETA) for your shipment.

Try ETA calculator

Why use the Demurrage & Detention Calculator?

Instant cost transparency for confident budgeting

By simulating port- and carrier-specific tariffs against your real or planned move dates, the calculator converts complex free-time rules into a clear daily cost timeline. Finance and operations teams gain upfront visibility over every potential euro or dollar of demurrage and detention, enabling accurate accruals, tighter quotes, and elimination of “surprise” invoice spikes.

Operational focus that keeps containers moving

Automatic countdowns to free-time expiry highlight which boxes need priority pickup or return, so dispatchers and truckers tackle the most time-critical moves first. This data-driven sequencing reduces yard idle time, prevents last-minute scrambles, and frees scarce chassis and drivers for new revenue-generating loads.

Data to negotiate better terms and boost supply-chain resilience

Aggregated histories of actual dwell days and charges reveal chronic bottlenecks, seasonal patterns, and carrier-port combinations that cost the most. Armed with hard numbers, logistics managers can negotiate extended free time, adjust sailing schedules, or shift cargo flows—driving double-digit percentage savings while protecting service reliability.

FAQs

Everything about container tracking

Sign-up for free

What is a Demurrage and Detention Calculator, and how does it work ?

A Demurrage and Detention Calculator is an online tool that estimates the charges you’ll incur when a container stays in the port (demurrage) or outside the port (detention) beyond its free-time allowance. By entering shipment dates, container type, carrier, and port, the calculator applies the latest tariff tables and free-time rules to produce an immediate, line-by-line cost breakdown—helping logistics teams plan and budget more accurately.

Why should shippers and freight forwarders use a Demurrage and Detention Calculator?

Using a Demurrage and Detention Calculator lets shippers, NVOCCs, and freight forwarders instantly see potential extra costs before they materialize. This proactive insight supports better scheduling, faster container turn-times, and clearer communication with carriers—ultimately reducing unexpected demurrage fees, detention penalties, and overall supply-chain spend.

Which data inputs are required for accurate demurrage and detention fee calculations?

For precise results you need the container’s arrival and gate-out dates (or projected dates), the container size and type (for example 20-foot dry van or 40-foot high-cube), the shipping line or leasing company, the specific port or inland terminal, and any contracted free-time days that differ from the standard tariff. Supplying these details allows the calculator to match your shipment against the correct port rules and carrier surcharges.

Can a Demurrage and Detention Calculator help reduce container costs and avoid penalties?

Additionally, our calculator aligns with the ISO 14083 standard, developed in harmony with the GLEC Framework.

Is the Demurrage and Detention Calculator updated with the latest port free-time policies and carrier tariffs?

Leading calculators sync on a regular basis—often daily—with carrier tariff updates, port authority notices, and terminal advisories, so changes in free-time policies, holiday schedules, and surcharge rates are reflected automatically and your cost projections stay accurate and compliant.

The analytics platform behind thousands of logistics companies.

Start Free Trial

No credit card required • 14-day free trial • Setup in 5 minutes