Here is a breakdown of what has been pledged so far:

Germany - $1.1bn
Berlin has raised its government aid to $674m. Germany is also sending a mobile hospital to Aceh and a military ship with two helicopters, aid supplies, water treatment equipment and an operating theatre on board. The public has donated an estimated $431m.

IMF - $1bn
The IMF has offered up to $1bn in financial assistance to afflicted countries.

Australia - $903m
The government has raised its offer of aid to $815 million over a five-year period. Half of this sum is in bilateral loans. Prime Minister, John Howard has been sceptical about supporting the debt relief initiative being pushed by other wealthy countries. Donations from the Australian public total $88m. About 350 military staff, four military helicopters, a troop transport ship, a military health support team and a water purification plant are being sent to Indonesia, as well as a team of volunteer medical professionals.

European Union - $628m
$628 million in reconstruction and humanitarian funds, of which $130m is humanitarian aid. This brings the total sum donated by the bloc (EC+ EU member states) to roughly $2bn.

US - $550m
$350m in government donations, plus military assistance involving 12,600 personnel, 21 ships, 14 cargo planes and more than 90 helicopters. Around $200m of private donations are also pouring in, with $120m donated to the US branches of the Red Cross, Oxfam and Save the Children, and to Catholic Relief Services.

Japan - $500m
$500m (£264m) in government donations, half of which Tokyo has promised to make available immediately in direct grants. Some 120 civilian emergency workers were sent to tsunami-hit countries. The government has also offered to help set up a tsunami early warning system in the Indian Ocean.

FROM THE WORLD'S POOREST Russian town of Beslan - scene of a bloody school siege last year - pledged 1m roubles ($36,000) from the fund set up after the mass hostage-taking Mozambique - one of the world's poorest nations - has donated $100,000 Nepal and East Timor have also pledged donations

Britain - $285m
$96m in government donations, plus $189m in private donations which the government has pledged to match. Two RAF planes, a C-17 and a Tristar, are helping to deliver aid to the region. Tony Blair has also offered to send 120 Ghurkas to Indonesia but this was rejected by Jakarta. Chancellor Gordon Brown is pushing a proposal for the debts of the affected nations to be frozen.

World Bank - $250m
The banks has diverted $250m from existing programmes to cover emergency needs while longer-term reconstruction needs are assessed.

Norway - $212m
Pledged $182m in government donations, plus $30m raised in private donations.

Asian Development Bank - $175m
An amount of $175m has been diverted from existing programmes in Indonesia, Sri Lanka and the Maldives. The bank says up to $150m more could be made available in new loans.

Sweden - $140m
Pledged $80m in government donations, plus $60m in private donations, including money raised during two telethons.

Italy - $115m
Donated $95m in government aid. Six to eight police forensics specialists have been sent to Thailand to help to identify bodies. Public donations totalling $20m had been collected by New Year's Day.

France - $115m
Pledged $66m in government donations, plus an estimated $49m raised in private donations. A medical team has been sent to Sri Lanka.

Canada - $348m
Prime Minister Paul Martin announced a five-fold increase in initial Canadian pledges, with a package worth almost $350m over five years. Private donations have so far reached $123m, the prime minister added.
Canada is deploying its highly-specialised Disaster Assistance Response Team to Sri Lanka.

Denmark - $75m
Some $75m in government aid. Copenhagen has sent a field hospital, transport vehicles and a ship to the UN aid effort, Prime Minister Anders Fogh Rasmussen has said.

Netherlands - $69m
Donated $34m by the government and aid groups say a further $35m has been raised in private donations. A Dutch police identification team has been sent to Thailand.

Spain - $68m
Given $68m in government donations, and a medical team has been sent to Sri Lanka.

China - $65.1m
Pledged$63.1m in government donations, plus $1.8m donated to the Chinese Red Cross.

South Korea - $63m
Pledged $50m in government aid. The prime minister's office said the funds would be spend for rehabilitation of the devastated areas over the next three years. Private donations have reached nearly $13m, the South Korean foreign ministry says.

Qatar - £25m
Has given $25m in government aid. Qatar is also sending food, medical and logistical supplies to affected countries.

Russia - $2m
Around $2m in aid but the government is sending additional aid, including grain and water purifiers.

North Korea
North Korea has pledged $150,000 to aid the effort in Indonesia.

Countries in the region

India
The Indian military is staging its biggest relief operation ever in Sri Lanka, the Maldives and Indonesia. This involves at least 16,000 troops, 32 navy ships, 41 aircraft including at least 16 helicopters, several medical teams and a mobile hospital. The air force has so far lifted 10,000 tonnes of relief supplies.

Bangladesh
Bangladesh has dispatched 111 soldiers to Sri Lanka and the Maldives, with a further 46 expected to join them. Two planes and two helicopters will carry the troops together with aid supplies.

Pakistan
Pakistan plans to send 500 military staff in medical and engineering teams to Indonesia and Sri Lanka.

Afghanistan
Afghanistan has pledged to send around a dozen medics and a planeload of medicine and equipment to India and Sri Lanka. Citizens have also donated blood.